当前位置: X-MOL 学术Phys. Rev. Lett. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Enhanced Magnon-Photon Coupling at the Angular Momentum Compensation Point of Ferrimagnets.
Physical Review Letters ( IF 8.6 ) Pub Date : 2020-07-10 , DOI: 10.1103/physrevlett.125.027205
Jaechul Shim 1, 2 , Seok-Jong Kim 3 , Se Kwon Kim 4, 5 , Kyung-Jin Lee 1, 3
Affiliation  

We theoretically show that the coupling between magnons in an antiferromagnetically coupled ferrimagnet and microwave photons in a cavity is largely enhanced at the angular momentum compensation point (TA) when TA is distinct from the magnetization compensation point. The origin of the enhanced magnon-photon coupling at TA is identified as the antiferromagnetic spin dynamics combined with a finite magnetization. Moreover, we show that strong magnon-photon coupling can be achieved at high excitation frequency in a ferrimagnet, which is challenging to achieve for a ferromagnet due to low magnon frequency and for an antiferromagnet due to weak magnon-photon coupling. Our results will invigorate research on magnon-photon coupling by proposing ferrimagnets as a versatile platform that offers advantages of both ferromagnets and antiferromagnets.

中文翻译:

Ferrimagnets的角动量补偿点处的增强型Magnon-Photon耦合。

从理论上讲,在角动量补偿点处,反铁磁耦合的铁磁体中的磁振子与空腔中的微波光子之间的耦合大大增强了(Ť一种) 什么时候 Ť一种与磁化补偿点不同。增强型磁光子耦合的起源Ť一种被认为是反铁磁自旋动力学结合有限的磁化强度。此外,我们表明,在高铁磁体中的高激励频率下可以实现强的磁振子-光子耦合,这对于低磁振子频率的铁磁体和由于弱的磁振子-光子耦合的反铁磁体来说都具有挑战性。我们的研究结果将铁磁作为一个通用平台,同时提供铁磁体和反铁磁体的优势,将促进磁子-光子耦合的研究。
更新日期:2020-07-10
down
wechat
bug